Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Opal at Mount Isa City Shire, Queensland, Australia

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of Ma - Ma at this locality

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Bradley_2012_128	1371	1361				208684	Myally Mine, Mount Gordon, Gunpowder District, Mount Isa City Shire, Queensland, Australia	McCauley and Bradley (2014)	CM52_183
Giersdorf_00000714	1624	1526			U	28503	Mount Isa Mines, Mount Isa, Mount Isa City Shire, Queensland, Australia	Chipley et al. (2007)	AM92_1925
Giersdorf_00000715	820	710			U	28503	Mount Isa Mines, Mount Isa, Mount Isa City Shire, Queensland, Australia	Chipley et al. (2007)	AM92_1925
Giersdorf_00000720	1382	942			U	28503	Mount Isa Mines, Mount Isa, Mount Isa City Shire, Queensland, Australia	Chipley et al. (2007)	AM92_1925
ree-00063	5.3	0.01				208662	Mount Gordon, Gunpowder District, Mount Isa City Shire, Queensland, Australia	Orris and Grauch (2002)	USGSOFR02_189
sedexmvt-00018	1655	1655			Pb,Zn,Cu	11841	George Fisher Mine, Hilton District, Mount Isa City Shire, Queensland, Australia	Taylor et al. (2009)	USGSOFR2009_1297
sedexmvt-00022	1645	1645				13984	Lady Loretta Deposit (Lady Loretta Prospect), Gunpowder District, Mount Isa City Shire, Queensland, Australia	Taylor et al. (2009)	USGSOFR2009_1297
sedexmvt-00024	1655	1655			Pb,Zn,Cu	28503	Mount Isa Mines, Mount Isa, Mount Isa City Shire, Queensland, Australia	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00025	1659	1651				11841	George Fisher Mine, Hilton District, Mount Isa City Shire, Queensland, Australia	Singer et al. (2009)	USGSOFR2009-1252
sedznpb-00029	1666	1643				13984	Lady Loretta Deposit (Lady Loretta Prospect), Gunpowder District, Mount Isa City Shire, Queensland, Australia	Singer et al. (2009)	USGSOFR2009-1252
sedznpb-00036	1659	1651				204775	Hilton District, Mount Isa City Shire, Queensland, Australia	Singer et al. (2009)	USGSOFR2009-1252

Locality age (remote)

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Giersdorf_00000712	1565	1535	Uraninite	Uraninite	U	12502	Mary Kathleen Mine (Mary Kathleen Uranium), Mary Kathleen District, Rosebud Station, Cloncurry Shire, Queensland, Australia	Chipley et al. (2007)	AM92_1925
Giersdorf_00000713	1512	1432	Uraninite	Uraninite	U	12502	Mary Kathleen Mine (Mary Kathleen Uranium), Mary Kathleen District, Rosebud Station, Cloncurry Shire, Queensland, Australia	Chipley et al. (2007)	AM92_1925